G01R 27/16
Measuring impedance of element or network through which a current is passing
Official title: Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
G01R27/16 (Measuring impedance of element or network through which a current is passing) appears on 725 US grants and 693 published applications in this corpus.
Search patents in G01R- Granted patents
- 725
- Published applications
- 693
- Assignees
- 529
- Inventors
- 1,706
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 8 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 5 |
| 2003 | 4 | 5 |
| 2004 | 9 | 6 |
| 2005 | 8 | 10 |
| 2006 | 11 | 7 |
| 2007 | 7 | 7 |
| 2008 | 6 | 18 |
| 2009 | 10 | 12 |
| 2010 | 12 | 8 |
| 2011 | 3 | 7 |
| 2012 | 6 | 19 |
| 2013 | 7 | 29 |
| 2014 | 24 | 33 |
| 2015 | 25 | 27 |
| 2016 | 30 | 31 |
| 2017 | 33 | 36 |
| 2018 | 33 | 37 |
| 2019 | 44 | 47 |
| 2020 | 51 | 53 |
| 2021 | 45 | 50 |
| 2022 | 52 | 60 |
| 2023 | 51 | 41 |
| 2024 | 48 | 55 |
| 2025 | 46 | 59 |
| 2026 | 21 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for identifying brush type, cleaning device and storage medium15 Sep 2026US 12,733,783 B2Beijing Xiaomi Mobile Software Co., Ltd.
- Method for detecting impedance of charging cable, electronic device, and power supply device15 Sep 2026US 12,736,566 B2Honor Device Co., Ltd.
- Coupler for coupling high-frequency EM energy with cables8 Sep 2026US 12,730,134 B2Connected Intelligence Systems Ltd.
- Circuit with switch for discharging capacitive elements connected to a safety-related digital input25 Aug 2026US 12,716,936 B2WAGO Verwaltungsgesellschaft mbH
- Vehicle ground connection diagnostic25 Aug 2026US 12,716,958 B2Aptiv Technologies AG
- Method and system for adaptively obtaining a corrected apparent impedance1 Oct 2026US 2026/0302776 A1Hitachi Energy Ltd
- Testing apparatus for detecting obstructions in multi-layer cellular structures and associated system and method24 Sep 2026US 2026/0287627 A1The Boeing Company
- Insulation monitoring device (imd), system for monitoring insulation and method for monitoring insulation of imd24 Sep 2026US 2026/0291216 A1Ls Electric Co., Ltd.
- Method of and sensing probe device for measuring a parameter of a quantum chip17 Sep 2026US 2026/0276675 A1Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Intrusion detection system for fence10 Sep 2026US 2026/0268750 A1A-1 Fence Products Company Pvt Ltd
Most cited
By later US patents
- Method and apparatus for measuring a parameter of a vehicle electrical system64US 7,154,276 B2Midtronics, Inc. · 2006
- System for calibrating a line isolation monitor62US 5,446,682 ASquare D Company · 1995
- Method and apparatus for measuring a parameter of a vehicle electrical system57US 8,164,343 B2Midtronics, Inc. · 2012
- Measurement of cable quality by power over ethernet54US 7,355,416 B1Microsemi Corp.—Analog Mixed Signal Group Ltd. · 2008
- Method and apparatus for measuring a parameter of a vehicle electrical system51US 9,018,958 B2Midtronics, Inc. · 2015